What do the three numbers such as 245 mean on Birkenstocks?Updated 9 months ago

There are a few different sets of numbers on the Birkenstock footbed that indicate the size or length of the footbed. For example, 245 represents the footbed length, which is 245mm and this is indicative of a size 38. On a size 38 you may also see M5 and L8, this is a US size equivalent.